Unix Engineer Interview Questions

UNIX is an operating systemoriginally developed in the 1960s at AT&T. Linux is an open-source OSinspired by UNIX. They share concepts and commands but have different licensingand distribution methods.

A shell provides an interface forusers to interact with the UNIX system, typically via command-line.

UNIX file permissions are basedon 3 categories: User (u), Group (g), and Others (o), with permissions likeRead (r), Write (w), and Execute (x).

An inode contains metadata abouta file (not the file content). It includes details like size, ownership, andpermissions.

The `ps` command displays activeprocesses. `top` provides a real-time view.